| Arnsberg to Navodari | 1,064.64 mi (1,713.37 km) |
| Arnsberg to Negresti-Oas | 726.62 mi (1,169.38 km) |
| Arnsberg to Nehoiu | 931.00 mi (1,498.31 km) |
| Arnsberg to Ocna Mures | 793.31 mi (1,276.71 km) |
| Arnsberg to Odobesti | 947.05 mi (1,524.13 km) |
| Arnsberg to Odorheiu Secuiesc | 854.97 mi (1,375.94 km) |
| Arnsberg to Oltenita | 994.62 mi (1,600.69 km) |
| Arnsberg to Onesti | 917.59 mi (1,476.72 km) |
| Arnsberg to Oradea | 690.34 mi (1,110.99 km) |
| Arnsberg to Orastie | 787.13 mi (1,266.77 km) |
| Arnsberg to Oravita | 762.46 mi (1,227.07 km) |
| Arnsberg to Orsova | 803.11 mi (1,292.49 km) |
| Arnsberg to Otelu Rosu | 767.32 mi (1,234.88 km) |
| Arnsberg to Otopeni | 953.06 mi (1,533.80 km) |
| Arnsberg to Ovidiu | 1,064.48 mi (1,713.11 km) |
